If one sphere (density = .3 x 10^3 kg/m^3) is placed at the bottom of a tub filled with water, and another sphere (density = 8.1 x 10^3 kg/m^3) is placed 1.5 m directly above the first sphere. At time t=0, the spheres are released and begin to move.
a) Determine the acceleration of each sphere.
b) Determine when the two spheres will collide.
c) Determine where they will collide. (how far from the bottom of the tub)